There are total 5 hours or 300 minutes from 4pm to 9pm. In words, this duration is equal to five hours or three hundred minutes.
How many hours from
| 9AM to 10PM | 1PM to 5PM | 8PM to 10AM |
| 11AM to 6AM | 6PM to 3PM | 2PM to 7PM |
| 10PM to 12PM | 12AM to 5AM | 1AM to 12PM |
| 4AM to 2AM | 7PM to 12PM | 1PM to 8PM |
| 7PM to 10PM | 12AM to 9AM | 6AM to 4PM |
| 5AM to 5PM | 1PM to 2PM | 2PM to 4PM |
